Stamping die for sealing gasket of air duct of aero-engine

Abstract

The utility model relates to the technical field of aero-engine accessory machining equipment, in particular to a stamping die for a sealing gasket of an aero-engine ventilation pipeline. The stamping die for the aero-engine ventilation pipeline sealing gasket solves the technical problem that in the prior art, an aero-engine ventilation pipeline sealing gasket machining die is low in machining efficiency. An aero-engine ventilation pipeline sealing gasket stamping die comprises an upper die. A lower die; in the downward movement process of the upper die, the positioning punch firstly makes contact with the machined plate, a positioning hole is punched out, the positioning punch is inserted into the positioning hole in the machined plate to position the machined plate, the upper die continues to move downwards, and the forming punch conducts impact forming on the machined plate. Namely, the aero-engine ventilation pipeline sealing gasket can be formed through one-time movement of the upper die, the production efficiency is improved, a machined plate does not need to move frequently, and the machining precision is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to aviation engine accessory processing equipment technical field especially relates to a kind of aviation engine air passage pipeline sealing pad stamping die. BACKGROUND

[0002] Aviation engine air passage pipeline sealing pad is processed from the metal plate with smooth surface.The existing processing process is, punch positioning hole in both ends of plate, after positioning by positioning hole, profile extrusion in the middle of plate, finally again punch off positioning hole area in both ends of plate, remaining profile extrusion part is finished product;Complete above-mentioned processing process, need punch die, profile extrusion die and blanking die, complete with three dies, equipment cost is high, plate switching processing between each die leads to low processing efficiency, in addition, blanking after profile extrusion leads to waste of processing raw material, improve production cost.

[0003] Therefore, aviation engine passage pipeline sealing pad processing die in prior art has the technical problem of low processing efficiency. SUMMARY

[0004] The aviation engine air passage pipeline sealing pad stamping die provided by the utility model solves the technical problem of low processing efficiency of aviation engine passage pipeline sealing pad processing die in prior art.

[0005] Some embodiments for solving the above technical problems include:

[0006] An aviation engine air passage pipeline sealing pad stamping die, comprising an upper die;

[0007] A lower die, located below the upper die;

[0008] And a material return plate, installed on the upper die, and located between the upper die and the lower die;

[0009] Wherein, the upper die is provided with a forming punch and a positioning punch, the lower die is provided with a forming cavity matched with the forming punch and a positioning cavity matched with the positioning punch, and the height of the lower end of the positioning punch is lower than the height of the lower end of the forming punch;

[0010] The lower die is provided with a guide column, the upper die and the material return plate are both provided with guide holes matched with the guide column, the material return plate is provided with through holes matched with the guide column and hole bodies matched with the forming punch and the positioning punch respectively;

[0011] The material return plate is fixed to the upper die by elastic members, and the elastic members push the material return plate to move away from the upper die.

[0012] Preferably, the upper die is provided with a cooling channel, which comprises a horizontal channel arranged in the upper die and a vertical channel arranged in the forming punch, and the horizontal channel communicates with the vertical channel.

[0013] Preferably, the horizontal channel comprises an inlet side and an outlet side, the inlet side communicates with the outlet side through the vertical channel, and a cooling medium sequentially flows through the inlet side, the vertical channel and the outlet side.

[0014] Preferably, the upper die is further provided with a nozzle, which comprises an inlet nozzle and an outlet nozzle, the inlet nozzle communicates with the inlet side, and the outlet nozzle communicates with the outlet side.

[0015] Preferably, the elastic member is a spring, the elastic member is sleeved on the guide column, the upper end of the elastic member is fixedly connected with the upper die, and the lower end of the elastic member is fixedly connected with the material return plate.

[0016] Preferably, the guide column is at least two, and the guide columns are uniformly arranged around the forming cavity, and each guide column is sleeved with an independent elastic member.

[0017] Preferably, the lower die is further provided with a discharge hole, the discharge hole communicates with the positioning cavity, the diameter of the discharge hole is greater than the diameter of the positioning cavity, and the positioning cavity is coaxially arranged with the discharge hole.

[0018] Preferably, the forming cavity is provided with a material ejecting assembly.

[0019] Preferably, the material ejecting assembly comprises a material ejecting column and a material ejecting spring arranged below the material ejecting column, the lower end of the material ejecting spring is fixed to the lower die, and the upper end of the material ejecting spring is fixedly connected with the material ejecting column.

[0020] Preferably, the upper end surface of the material ejecting column is not higher than the upper end surface of the forming cavity.

[0021] Compared with the prior art, the utility model has the following advantages:

[0022] By arranging the positioning punch and the forming punch in the upper die, the lower end of the positioning punch is lower than the lower end of the forming punch, during the downward movement of the upper die, the positioning punch first contacts the processed plate and punches out the positioning hole, and the positioning punch is inserted into the positioning hole on the processed plate to position the processed plate, and the upper die continues to move downward, and the forming punch impacts and forms the processed plate. That is, the forming of the sealing gasket of the air intake pipe of the aircraft engine can be completed by one-time movement of the upper die, the production efficiency is improved, and the processed plate does not need to be frequently moved, and the machining precision is improved.

[0023] Through setting the material returning plate and the elastic element, the material returning plate can complete material returning under the elastic force of the elastic element during the upward movement of the upper die, material adhesion to the positioning punch or the forming punch is prevented, and the production efficiency is further improved. BRIEF DESCRIPTION OF DRAWINGS

[0024] For purposes of explanation, several embodiments of the present inventive technology are set forth in the accompanying figures. The figures are incorporated into this text and constitute a part of the detailed description. In some instances, well-known structures and devices are shown in block diagram form in order to avoid obscuring the conceptual presentation of the present inventive subject matter.

[0025] Figure 1 is a schematic view of the present invention.

[0026] Figure 2 is a top view of the present invention.

[0027] Figure 3 is Figure 2 is a sectional view at A-A.

[0028] Figure 4 is Figure 2 is a sectional view at B-B.

[0029] Figure 5 is a schematic view of the lower die.

[0030] Figure 6 is a schematic view of the upper die.

[0031] In the drawings:

[0032] 1, upper die, 11, forming punch, 12, positioning punch, 13, cooling channel, 131, entry side, 132, discharge side, 133, vertical channel, 134, entry nozzle, 135, discharge nozzle.

[0033] 2, lower die, 21, forming cavity, 22, positioning cavity, 221, material discharge hole, 23, guide column, 231, elastic element, 24, material ejecting column, 25, material ejecting spring.

[0034] 3, material returning plate. DETAILED DESCRIPTION

[0035] The specific embodiments shown below are intended to be illustrative of the various configurations of the present inventive subject matter and are not intended to represent the only configurations in which the present inventive subject matter can be practiced. The specific embodiments include specific details for the purposes of providing a thorough understanding of the present inventive subject matter. However, it will be apparent to those skilled in the art that the present inventive subject matter can be practiced without these specific details.

[0036] It is to be understood that the relational terms herein, such as first and second, are used solely to distinguish one from another entity or action without necessarily implying any actual relationship or order between such entities or actions.

[0037] The terms "comprises", "comprising", or any other variations thereof, are intended to cover a non-exclusive inclusion such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus. An element proceeded by "comprises... a" does not, without more constraints, exclude the existence of additional identical elements in the process, method, article, or apparatus that comprises the element.

[0038] Referring to Figures 1 to 6 A stamping die for sealing gasket of an aero-engine air duct, comprising an upper die 1;

[0039] a lower die 2, which is below the upper die 1;

[0040] and a material return plate 3, which is installed on the upper die 1 and is between the upper die 1 and the lower die 2;

[0041] wherein the upper die 1 is provided with a forming punch 11 and a positioning punch 12, the lower die 2 is provided with a forming cavity 21 matched with the forming punch 11 and a positioning cavity 22 matched with the positioning punch 12, and the height of the lower end of the positioning punch 12 is lower than that of the lower end of the forming punch 11;

[0042] The lower die 2 is provided with a guide column 23, and the upper die 1 and the material return plate 3 are both provided with guide holes matched with the guide column 23, and the material return plate 3 is provided with through holes matched with the guide column 23 and hole bodies matched with the forming punch 11 and the positioning punch 12 respectively;

[0043] The material return plate 3 is fixed to the upper die 1 by an elastic member 231, and the elastic member 231 pushes the material return plate 3 to move away from the upper die 1.

[0044] In some embodiments, the upper die 1 can be fixed to the moving part of a stamping machine in any way, and the moving part of the stamping machine is usually the piston rod of the hydraulic system, i.e. the upper die 1 can be fixed to the piston rod in any way. Before stamping, the plate to be stamped is placed between the material return plate 3 and the lower die 2, usually on the lower die 2. Turn on the stamping machine, and the piston rod drives the upper die 1 to move downward, and the material return plate 3 first contacts the plate to be stamped to preliminarily position the plate to be stamped.

[0045] Then, the piston rod continues to move downward, driving the upper die 1 to move downward. Since the lower end of the positioning punch 12 is lower, the positioning punch 12 first contacts the plate to be punched and punches out the positioning hole. At this time, the upper die 1 does not move upward, and the positioning punch 12 cooperates with the positioning hole formed by the positioning punch 12 on the plate to be punched. In this process, the positioning punch 12 forms a positioning rod to position the plate to be punched.

[0046] The piston rod continues to drive the upper die 1 to move downward until the forming punch 11 contacts the plate to be punched and forms a sealing gasket. Then, the piston rod moves upward, and the material that may be adhered to the forming punch 11 or / and the positioning punch 12 is pushed away by the material ejecting plate 3 under the action of the elastic member 231, so that the material is not adhered to the forming punch 11 or / and the positioning punch 12, and one-time processing is completed.

[0047] After the forming is completed, the upper die 1 is displaced to the uppermost position, at which time the material ejecting plate 3 is out of contact with the lower die 2, preparing for the next forming.

[0048] Referring to Figures 1 to 6 In some embodiments, the upper die 1 is provided with a cooling channel 13, which includes a horizontal channel arranged in the upper die 1 and a vertical channel 133 arranged in the forming punch 11, and the horizontal channel communicates with the vertical channel 133.

[0049] In some embodiments, the cooling channel 13 can have multiple channels, and the multiple cooling channels 13 can be arranged in parallel. Cooling medium can circulate in the multiple cooling channels 13, and the cooling medium can be a fluid medium such as cooling liquid or cooling gas flow.

[0050] In some embodiments, the cooling channel 13 can be connected to a cooling tank through a hose, the cooling tank has a cooling medium, and the cooling tank can also be provided with a cooling pump for driving the cooling medium in the cooling tank to circulate in the cooling channel 13.

[0051] In some embodiments, the horizontal channel includes an inlet side 131 and an outlet side 132, the inlet side 131 communicates with the outlet side 132 through the vertical channel 133, and the cooling medium flows through the inlet side 131, the vertical channel 133 and the outlet side 132 in sequence.

[0052] Referring to Figures 1 to 6 In some embodiments, the upper die 1 is also provided with a nozzle, and the nozzle includes an inlet nozzle 134 and an outlet nozzle 135, the inlet nozzle 134 communicates with the inlet side 131, and the outlet nozzle 135 communicates with the outlet side 132.

[0053] In some embodiments, the entering nozzle 134 and the discharging nozzle 135 can be integrated with the upper die 1. Alternatively, the entering nozzle 134 and the discharging nozzle 135 can be welded to the upper die 1.

[0054] It can be understood that the cooling channel 13 keeps the working temperature of the upper forming punch 11 within a reasonable range, preventing the forming punch 11 from being overheated and losing effectiveness or changing in size due to long-time work. By providing the cooling channel 13, the forming punch 11 has a reasonable temperature, improving the forming precision.

[0055] In some embodiments, the elastic member 231 is a spring, the elastic member 231 is sleeved on the guide column 23, the upper end of the elastic member 231 is fixedly connected with the upper die 1, and the lower end of the elastic member 231 is fixedly connected with the material return plate 3.

[0056] Referring to Figures 1 to 6 In some embodiments, the guide column 23 is at least two, the guide columns 23 are uniformly arranged around the forming cavity 21, and each of the guide columns 23 is sleeved with an independent elastic member 231.

[0057] In some embodiments, the guide column 23 is four, and the four guide columns 23 are uniformly distributed around the forming cavity 21. The guide column 23 and the lower die 2 can also be an integrated structure.

[0058] It can be understood that the guide column 23 simultaneously guides the material return plate 3 and the upper die 1, and the material return plate 3 and the upper die 1 have high displacement precision relative to the lower die 2, thereby improving the forming precision.

[0059] In some embodiments, the lower die 2 is further provided with a discharging hole 221, the discharging hole 221 is communicated with the positioning cavity 22, the diameter of the discharging hole 221 is greater than that of the positioning cavity 22, and the positioning cavity 22 and the discharging hole 221 are coaxially arranged.

[0060] It can be understood that the diameter of the discharging hole 221 is greater than that of the positioning cavity 22, and the material punched down by the positioning punch 12 can be quickly discharged through the discharging hole 221. At the same time, the discharging hole 221 does not contact the positioning punch 12, which can prevent the positioning punch 12 from being worn.

[0061] In some embodiments, the forming cavity 21 is provided with a material ejection assembly.

[0062] It can be understood that the material ejection assembly is used to eject the material punched down by the forming punch 11 in the forming cavity 21, which can prevent the forming cavity 21 from being blocked. Of course, the material punched down by the forming punch 11 can be automatically discharged downward out of the forming cavity 21 under the action of gravity without the material ejection assembly in the forming cavity 21.

[0063] Referring to Figures 1 to 6 As shown in the drawings, in some embodiments, the ejector assembly comprises an ejector post 24 and an ejector spring 25 arranged below the ejector post 24, the lower end of the ejector spring 25 is fixed to the lower die 2, and the upper end of the ejector spring 25 is fixedly connected with the ejector post 24.

[0064] In some embodiments, the upper end surface of the ejector post 24 is not higher than the upper end surface of the forming cavity 21.

[0065] In some embodiments, the cross-sectional shape of the ejector post 24 is not limited and can be reasonably determined as needed. The ejector post 24 and the forming cavity 21 should be gap-fitted, that is, the ejector post 24 does not contact the side wall of the forming cavity 21, so as to prevent the side wall of the forming cavity 21 from being worn due to the contact between the ejector post 24 and the side wall of the forming cavity 21. Since the ejector post 24 does not contact the side wall of the forming cavity 21, the forming cavity 21 is not easily worn, thereby prolonging the service life of the lower die 2.

[0066] In some embodiments, the lower die 2 can be fixed to the workbench of the punch machine in any manner. For example, the lower die 2 can be fixed to the workbench of the punch machine by screws. The upper die 1 can be fixed to the piston rod of the punch machine by screws.

[0067] The above introduces the subject technical scheme of the utility model and the corresponding details. It can be understood that the above introduction is only some implementation of the subject technical scheme of the utility model, and some details can be omitted in the specific implementation.

[0068] In addition, in some implementation of the utility model, a plurality of implementation can be combined, and various combination schemes are not listed one by one due to the length. The person skilled in the art can freely combine the above implementation according to the needs in the specific implementation to obtain better application experience.

[0069] The person skilled in the art can obtain other details or drawings according to the subject technical scheme of the utility model and the drawings in the implementation of the subject technical scheme of the utility model. Obviously, these details still belong to the range covered by the subject technical scheme of the utility model without departing from the subject technical scheme of the utility model.

Claims

1. An aeroengine air duct seal gasket stamping die characterized by: The upper die (1) is provided with a forming punch (11) and a positioning punch (12), the lower die (2) is provided with a forming cavity (21) matched with the forming punch (11) and a positioning cavity (22) matched with the positioning punch (12), and the height of the lower end of the positioning punch (12) is lower than that of the lower end of the forming punch (11). The lower die (2) is provided with guide columns (23), and the upper die (1) and the material return plate (3) are both provided with guide holes matched with the guide columns (23), the material return plate (3) is provided with through holes matched with the guide columns (23) and hole bodies matched with the forming punch (11) and the positioning punch (12) respectively. The material return plate (3) is fixed to the upper die (1) by an elastic element (231), and the elastic element (231) pushes the material return plate (3) to move away from the upper die (1). The upper die (1) is provided with a cooling channel (13) including a horizontal channel arranged in the upper die (1) and a vertical channel (133) arranged in the forming punch (11), and the horizontal channel is communicated with the vertical channel (133). The horizontal channel includes an entering side (131) and a discharging side (132), the entering side (131) is communicated with the discharging side (132) through the vertical channel (133), and a cooling medium flows through the entering side (131), the vertical channel (133) and the discharging side (132) in sequence. The upper die (1) is further provided with a connecting nozzle including an entering connecting nozzle (134) and a discharging connecting nozzle (135), the entering connecting nozzle (134) is communicated with the entering side (131), and the discharging connecting nozzle (135) is communicated with the discharging side (132).

2. The aircraft engine vent duct seal grommet stamping die of claim 1, wherein: The elastic element (231) is a spring, the elastic element (231) is sleeved on the guide column (23), the upper end of the elastic element (231) is fixedly connected with the upper die (1), and the lower end of the elastic element (231) is fixedly connected with the material return plate (3).

3. The aircraft engine vent duct seal grommet stamping die of claim 2, wherein: The guide columns (23) are at least two, the guide columns (23) are uniformly arranged around the forming cavity (21), and each guide column (23) is sleeved with an independent elastic element (231).

4. The aircraft engine vent duct seal grommet stamping die of claim 3, wherein: The lower die (2) is further provided with a discharging hole (221) communicated with the positioning cavity (22), the diameter of the discharging hole (221) is greater than that of the positioning cavity (22), and the positioning cavity (22) and the discharging hole (221) are coaxially arranged. The forming cavity (21) is provided with a material ejecting assembly.

5. The aircraft engine vent duct seal grommet stamping die of claim 1, wherein: ​ 6. The aircraft engine vent duct seal grommet stamping die of claim 5, wherein: ​ 7. The aircraft engine vent duct seal grommet stamping die of claim 1, wherein: ​ 8. The aircraft engine vent duct seal grommet stamping die of claim 1, wherein: ​ 9. The aircraft engine vent duct seal grommet stamping die of claim 8, wherein: The ejecting assembly comprises an ejecting column (24) and an ejecting spring (25) arranged below the ejecting column (24), the lower end of the ejecting spring (25) is fixed to the lower die (2), and the upper end of the ejecting spring (25) is fixedly connected with the ejecting column (24).

10. The aircraft engine vent duct seal grommet stamping die of claim 9, wherein: The upper end surface of the ejecting column (24) is not higher than the upper end surface of the forming cavity (21).

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